AAT1153 Datasheet, PDF (4/19 Pages) Advanced Analogic Technologies – 2A Step-Down Converter

DATA SHEET
AAT1153
2A Step-Down Converter
Electrical Characteristics¹
V_IN = 3.6V, T_A = -40°C to +85°C unless otherwise noted; typical values are T_A = 25°C.
Symbol
V_IN
V_OUT
I_Q
I_FB
V_FB
V_LINEREG/
V_IN
V_LOADREG/
I_OUT
V_FB
F_OSC
T_S
T_SD
T_HYS
I_LIM
R_DS(ON)
V_EN(L)
V_EN(H)
I_EN
Description
Input Voltage Range²
Output Voltage Range
Input DC Supply Current
Feedback Input Bias Current
Regulated Feedback Voltage³
Line Regulation
Load Regulation
Output Voltage Accuracy
Oscillator Frequency
Startup Time
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Peak Switch Current
P-CH MOSFET
N-CH MOSFET
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
Active Mode: V_FB = 0.5V
Shutdown Mode: V_EN = 0V, V_AIN = 5.5V
V_FB = 0.65V
T_A = 25°C
0°C ≤ T_A ≤ 85°C
-40°C ≤ T_A ≤ 85°C
V_IN = 2.5V to 5.5V, I_OUT = 10mA
I_OUT = 10mA to 2000mA
V_IN = 2.5 to 5.5V, I_OUT = 10 to 2000mA
V_FB = 0.6V
From Enable to Output Regulation
V_IN = 3.6V
V_IN = 3.6V
V_IN = V_EN = 5.5V
Min
2.5
0.6
0.5880
0.5865
0.5850
Typ
300
0.1
0.6000
0.6000
0.6000
Max
5.5
V_IN
500
1
30
0.6120
0.6135
0.6150
Units
V
V
μA
μA
nA
V
0.10 0.20 %/V
-3
0.96
2.5
1.5
-1.0
0.20
1.2
1.3
170
10
3.5
135
95
+3
1.44
200
150
0.3
1.0
%/A
% V_OUT
MHz
ms
°C
°C
A
mΩ
V
V
μA
1. The AAT1153 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
2. VIN should be not less than VOUT + VDROPOUT, where VDROPOUT = IOUT x (RDS(ON)PMOS + ESRINDUCTOR), typically VDROPOUT = 0.3V.
3. The regulated feedback voltage is tested in an internal test mode that connects VFB to the output of the error amplifier.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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201992B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 18, 2013